{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308788",
    "entityType": "User",
    "nonce": "0x27416b07d9b9fc53bd1633f4ec78bec4692a24efadeb49ac38dbd0bde9773551",
    "signature": "0xda2e7f21b3e09403e0387522a4c7f50dd357a450946fb587e9ab28fc714f01524a6a32c1dd3c5aac9f404bf59693de981b19e687ea522a49007694d1010fd3621b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}